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Journal Articles

Off-axis neutral beam current drive for advanced scenario development in DIII-D

Murakami, Masanori*; Park, J. M.*; Petty, C. C.*; Luce, T. C.*; Heidbrink, W. W.*; Osborne, T. H.*; Prater, R.*; Wade, M. R.*; Anderson, P. M.*; Austin, M. E.*; et al.

Nuclear Fusion, 49(6), p.065031_1 - 065031_8, 2009/06

 Times Cited Count:39 Percentile:83.07(Physics, Fluids & Plasmas)

Modification of the two existing DIII-D neutral beam lines is planned to allow vertical steering to provide off-axis neutral beam current drive (NBCD) peaked as far off-axis as half the plasma minor radius. New calculations for a downward-steered beam indicate strong current drive with good localization off-axis so long as the toroidal magnetic field, BT, and the plasma current, Ip, point in the same direction. This is due to good alignment of neutral beam injection (NBI) with the local pitch of the magnetic field lines. This model has been tested experimentally on DIII-D by an injecting equatorially-mounted NBs into reduced size plasmas that are vertically displaced with respect to the vessel midplane. The existence of off-axis NBCD is evident in the changes seen in sawtooth behavior in the internal inductance. By shifting the plasma upward or downward, or by changing the sign of the toroidal field, measured off-axis NBCD profiles measured with motional Stark effect data and internal loop voltage show a difference in amplitude (40%-45%) consistent with predicted differences predicted by the changed NBI alignment with respect to the helicity of the magnetic field lines. The effects of NB injection direction relative to field line helicity can be large even in ITER: off-axis NBCD can be increased by more than 20% if the BT direction is reversed. Modification of the DIII-D NB system will strongly support scenario development for ITER and future tokamaks as well as providing flexible scientific tools for understanding transport, energetic particles and heating and current drive.

Journal Articles

Experimental tests of paleoclassical transport

Callen, J. D.*; Anderson, J. K.*; Arlen, T. C.*; Bateman, G.*; Budny, R. V.*; Fujita, Takaaki; Greenfield, C. M.*; Greenwald, M.*; Groebner, R. J.*; Hill, D. N.*; et al.

Nuclear Fusion, 47(11), p.1449 - 1457, 2007/11

 Times Cited Count:7 Percentile:27.89(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

New limits on the ordered moments in $$alpha$$-Pu and Ga-stabilized $$delta$$-Pu

Heffner, R. H.; Morris, G. D.*; Fluss, M. J.*; Chung, B.*; MacLaughlin, D. E.*; Shu, L.*; Anderson, J. E.*

Physica B; Condensed Matter, 374-375, p.163 - 166, 2006/03

 Times Cited Count:8 Percentile:40.24(Physics, Condensed Matter)

The $$mu$$SR measurements in pulutonium metals are reported for the first time. The ground-state properties of Pu metal is not understood clearly. We found the upper limits of the ordered moment in $$alpha$$-Pu and $$delta$$-stabilized Pu is $$<10^{-3}mu_B$$ at $$sim$$4K.

Journal Articles

$$mu$$SR studies of the superconducting order parameter in PuCoGa$$_5$$

Morris, G. D.*; Heffner, R. H.; Bauer, E. D.*; Morales, L. A.*; Sarrao, J. L.*; Fluss, M. J.*; MacLaughlin, D. E.*; Shu, L.*; Anderson, J. E.*

Physica B; Condensed Matter, 374-375, p.180 - 183, 2006/03

 Times Cited Count:15 Percentile:58.07(Physics, Condensed Matter)

Journal Articles

Critical slowing down in the geometrically frustrated pyrochlore antiferromagnet Gd$$_2$$Ti$$_2$$O$$_7$$

MacLaughlin, D. E.*; Rose, M. S.*; Anderson, J. E.*; Shu, L.*; Heffner, R. H.; Kimura, Tsuyoshi*; Morris, G. D.*; Bernal, O. O.*

Physica B; Condensed Matter, 374-375, p.142 - 144, 2006/03

 Times Cited Count:3 Percentile:18.82(Physics, Condensed Matter)

Longitudinal-field muon spin relaxation experiments have been carried out in the paramagnetic state of single-crystal Gd$$_2$$Ti$$_2$$O$$_7$$ just above the phase transition. At high applied fields the relaxation time is proportional to field. At low fields the relaxation rate increases markedly as the freezing temperature is approached. This behavior is consistent with the very long autocorrelation function cutoff time.

Journal Articles

Effect of annealing on glassy dynamics and non-Fermi liquid behavior in UCu$$_4$$Pd

MacLaughlin, D. E.*; Rose, M. S.*; Anderson, J. E.*; Bernal, O. O.*; Heffner, R. H.; Nieuwenhuys, G. J.*; Baumbach, R. E.*; Butch, N. P.*; Maple, M. B.*

Physica B; Condensed Matter, 374-375, p.177 - 179, 2006/03

 Times Cited Count:1 Percentile:7.01(Physics, Condensed Matter)

Longitudinal-field $$mu$$SR experiments have been performed in unannealed and annealed samples of the heavy-fermion compound UCu$$_4$$Pd to study the effect of disorder on non-Fermi liquid behavior in this material. The observed scaling exponent independent of annealing. Annealed samples exhibited a reduction of the relaxation rate at low temperatures, indicating that annealing shifts fluctuation noise power to higher frequencies. There was no tendency of the inhomogeneous spread in rates to decrease with annealing. The correlation with residual resistivity previously observed for a number of NFL heavy-electron materials is also found in the present work.

Journal Articles

Spin freezing and non-glassy dynamics in Ce$$_{0.2}$$La$$_{0.8}$$RhIn$$_5$$

MacLaughlin, D. E.*; Shu, L.*; Anderson, J. E.*; Heffner, R. H.; Morris, G. D.*; Bernal, O. O.*; Kim, J. S.*; Stewart, G. R.*

Physica B; Condensed Matter, 378-380, p.144 - 145, 2006/02

 Times Cited Count:0 Percentile:0(Physics, Condensed Matter)

Journal Articles

Penetration depth study in the heavy-fermion superconductor PrOs$$_4$$Sb$$_{12}$$

Shu, L.*; MacLaughlin, D. E.*; Heffner, R. H.; Callaghan, F. D.*; Sonier, J. E.*; Morris, G. D.*; Bernal, O. O.*; Bosse, A.*; Anderson, J. E.*; Yuhasz, W. M.*; et al.

Physica B; Condensed Matter, 374-375, p.247 - 250, 2006/01

 Times Cited Count:6 Percentile:32.73(Physics, Condensed Matter)

Journal Articles

Tritium evacuation performance of a large oil-free reciprocating pump

Hayashi, Takumi; Yamada, Masayuki; Konishi, Satoshi; Matsuda, Yuji; Okuno, Kenji; J.E.Nasise*; R.S.Dahlin*; Anderson, J. L.*

Fusion Engineering and Design, 28, p.357 - 361, 1995/00

 Times Cited Count:11 Percentile:73.26(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Operation of a simulated non-steady tokamak fuel loop using the tritium systems test assembly

Konishi, Satoshi; Yamanishi, Toshihiko; Enoeda, Mikio; Hayashi, Takumi; Ohira, Shigeru; Yamada, Masayuki; Suzuki, Takumi; Okuno, Kenji; Sherman, R. H.*; Willms, R. S.*; et al.

Fusion Engineering and Design, 28, p.258 - 264, 1995/00

 Times Cited Count:4

no abstracts in English

JAEA Reports

Tritium test of the tritium processing components under the Annex III US-Japan collaboration; Annex III final report

Konishi, Satoshi; Yoshida, Hiroshi; Naruse, Yuji; K.E.Binning*; R.V.Carlson*; Bartlit, J. R.*; Anderson, J. L.*

JAERI-M 93-090, 21 Pages, 1993/03

JAERI-M-93-090.pdf:0.6MB

no abstracts in English

JAEA Reports

Joint operation of the TSTA under the collaboration between JAERI and U.S.-DOE; TSTA extended loop operation with 100 grams of tritium on April-May, 1992

Hayashi, Takumi; Nakamura, Hirofumi; Konishi, Satoshi; Inoue, Masahiko*; Hirata, Kazuhiro*; Okuno, Kenji; Naruse, Yuji; Anderson, J. L.*; Sherman, R. H.*; Willms, R. S.*; et al.

JAERI-M 93-083, 54 Pages, 1993/03

JAERI-M-93-083.pdf:1.64MB

no abstracts in English

JAEA Reports

Joint operation of the TSTA with the J-FCU under the collaboration between JAERI and U.S.-DOE; A First integrated tritium test between J-FCU and ISS on October, 1991

Hayashi, Takumi; Nakamura, Hirofumi; Konishi, Satoshi; Yamanishi, Toshihiko; Inoue, Masahiko*; Hirata, Kazuhiro*; Okuno, Kenji; Naruse, Yuji; Anderson, J. L.*; Barnes, J. W.*; et al.

JAERI-M 93-081, 35 Pages, 1993/03

JAERI-M-93-081.pdf:1.19MB

no abstracts in English

JAEA Reports

Joint operation of TSTA under the collaboration between JAERI and DOE-LANL; An Integrated loop operation with 100-g tritium in July 1988

Okuno, Kenji; Enoeda, Mikio; *; *; Yoshida, Hiroshi; Naruse, Yuji; Anderson, J. L.*; Bartlit, J. R.*; Sherman, R. H.*; R.V.Carlson*; et al.

JAERI-M 90-028, 73 Pages, 1990/02

JAERI-M-90-028.pdf:1.51MB

no abstracts in English

JAEA Reports

TSTA loop operation with 100grams-level of tritium; Full components milestone run in June, 1988

Yoshida, Hiroshi; *; Hirata, Shingo*; Yamanishi, Toshihiko; *; Anderson, J. L.*; Bartlit, J. R.*; C.R.Walthers*; Sherman, R. H.*; D.O.Coffin*; et al.

JAERI-M 88-242, 73 Pages, 1988/12

JAERI-M-88-242.pdf:1.4MB

no abstracts in English

15 (Records 1-15 displayed on this page)
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